Updated pwgen package fixes security vulnerabilities:

Pwgen was found to generate weak non-tty passwords by default, which
could be brute-forced with a commendable success rate, which could
raise security concerns (CVE-2013-4440).

Pwgen was found to silently falling back to use standard pseudo
generated numbers on the systems that heavily use entropy. Systems,
such as those with a lot of daemons providing encryption services,
the entropy was found to be exhausted, which forces pwgen to fall
back to use standard pseudo generated numbers (CVE-2013-4442).